Mitsubishi Electric Corp announced the overview of its ultra-high-speed elevator developed for the 632-meter Shanghai Tower under construction in Shanghai, China.
For the traction motor of the elevator, Mitsubishi Electric employed a parallel drive system that uses two three-phase winding coils for each motor and controls the two three-phases with two control panels. By using two compact control panels, the company enabled to design the layout of a machinery room more freely while increasing output power. The operation of the elevator is scheduled to begin in 2014.
To realize the world's fastest speed of 1,080 m per minute, Mitsubishi Electric used new technologies for higher safety, lifting height and comfort as well as for the motor for the winch. Specifically, to enhance safety, the company employed a two-tiered brake (the company's former product has a one-tiered brake) for emergency stop and used fine ceramic with a heat resistance of up to about 1,000Ā°C for the brake shoe.
The buffer (shock absorber) at the bottom of the elevator shaft is comprised of three tiers (the former product has a one-tiered butter) and has a stroke of 7.3 meters, which is about 30% shorter than the stroke of the former product's buffer.
For the "sfleX-rope," a rope for the winch, Mitsubishi Electric employed a new structure so that it can hold a greater weight of a longer rope. The company improved the density of the rope by using a concentric-layered steel wire and filled the gap between the layers with plastic.
As a result, the company increased breaking load by 85% while increasing mass per unit length only by 18%. The new rope is less extensible. So, when people get in the elevator, it does not shake vertically much.
This time, Mitsubishi Electric newly developed a control cable that is 20% lighter than the one used for the former product.
For the comfort, the new elevator is equipped with the "active roller guide," which detects vibration and applies anti-phase vibration to it so that the vibration of the car is reduced. While two units of the active roller guide are installed in the bottom of the former product, Mitsubishi Electric added two more to the upper side of the new elevator because a different type of vibration is applied to the new product when it is moving at an ultra-high speed. As a result, vibration was reduced to about 1/3 that of the former product.
Furthermore, the new elevator is equipped with a streamlined aerodynamic car cover that reduces air resistance as well as an air pressure control device consisting of an air blower, a duct and a box for switching between air intake and emission. As a result, rapid changes in atmospheric pressure can be prevented, reducing passengers' feeling of fullness in the ear. BD+C
Related Stories
| Oct 3, 2014
New survey tracks Americansā attitudes towards transit use
A record 10.7 billion rides were taken on public transit in the United States last year. And a national survey of Americans finds that the speed, reliability, and cost, more than any other factors, determine peopleās willingness and frequency of use.
| Oct 2, 2014
Effective use of building enclosure mock-ups within the commissioning process
Engineers from SSR offer advice and guidelines on implementing building enclosure mockups on any project.
| Oct 2, 2014
Budget busters: Report details 24 of the world's most obscenely over-budget construction projects
Montreal's Olympic Stadium and the Sydney Opera House are among the landmark projects to bust their budgets, according to a new interactive graph by Podio.Ā
| Oct 1, 2014
Long-time competitors NAC|Architecture and Osborn merge
The combined firm has offices in California, Colorado, and Washington, and offers a wide range of services, from landscape architecture and graphic design to architecture and interior design.
| Oct 1, 2014
Philip Johnson's iconic Crystal Cathedral to be modernized, made 'intrinsically Catholic'
Johnson Fain and Rios Clementi Hale Studios have been commissioned by the Roman Catholic Diocese of Orange to upgrade the all-glass church in Garden Grove, Calif. The church acquired the property in 2012.Ā
| Oct 1, 2014
4 trends shaping the future of data centers
As a designer of mission critical facilities, Iāve learned that itās really difficult to build data centers to keep pace with technology, yet thatās a reality we face along with our clients, writes Gensler's Jackson Metcalf.Ā
| Oct 1, 2014
EYP, WHR Architects merge, strengthening presence in education, healthcare, energy sectors
The merger unites 530 professionals to better address some of the most critical issues facing our nation, namely education, healthcare, and energy. Ā
| Sep 30, 2014
The Big Room concept: Using Building Team collocation to ensure project success
Implementing collocation via the Big Room concept will remove silos, ensure a cadence for daily communication, promote collaboration, and elevate your chances for success, write CBRE Healthcare's Stephen Powell and Magnus Nilsson.
| Sep 30, 2014
USGBC, Bank of America name recipients of 2014 Affordable Green Neighborhoods Grant Program
Eleven projects have been selected for the 2014 Affordable Green Neighborhoods grant program. Each will receive $31,000 and an educational package to support their pursuit of LEED for Neighborhood Development certification.
Sponsored | | Sep 30, 2014
What are you doing to win business and improve morale?? VDC Director Kris Lengieza shares ways to do both
Bluebeam's Sasha Reed sits down with Kris Lengieza, Director of Virtual Design and Construction for Stiles Corporation, to learn how he approaches change management. SPONSORED CONTENT